• Oxidation Stability Bath for Mineral Insulating Oils

Oxidation Stability Bath for Mineral Insulating Oils

Determines oxidation stability of mineral transformer oils by measuring the amount of sludge and acid formed under prescribed accelerated aging conditions

  • Conforms to ASTM D2440 and related specifications
  • Capacity for 6 samples
  • Digital temperature control with digital display and over-temperature cut-off

Constant temperature oil bath for testing oxidation stability of mineral insulating oils. Immerses six oil receptacles at the required depth per ASTM specifications at 110°C ± 0.5°C, and controls oxygen flow to each sample at the rate of 1L/h ± 0.1L/h through six independent flowmeters mounted on a common manifold. Insulated double-wall stainless steel bath has microprocessor temperature control with °C/°F switchable digital setpoint and display. Operator and equipment are protected by an overtemperature control circuit which automatically interrupts power to the unit when bath temperature exceeds a programmed cut-off point. Order bath thermometer drying tower and catalyst separately.

Conforms to the Specifications of:

ASTM D2440


  • 6 Samples


  • Range: Ambient to 230°F (110°C)
  • Control Stability: ±0.09°F (±0.05°C)

Bath Medium:

  • 7.2 gal (27.2 L) white technical oil

K64100: 115V 60Hz, Single Phase, 10A

K64190: 220-240V 50/60Hz, Single Phase, 5A

  • K12130 Copper Catalyst Coils - Sealed in a glass jar with a nitrogen atmosphere. Pack of 24 (12 sets)
  • 332-005-010 Drying Tower 250mL with ground glass stopper and side tubes
  • 332-005-011 Glass Filter Crucible
  • 250-000-95C ASTM 95C Thermometer - Range: 100 to 130°C
  • 355-001-001 White Technical Oil - 1 gal container
  • 355-001-003 White Technical Oil - 5 gal container